Separable fastener



E Jan. 20, 1931. D. DYREsl-:N

SEPARABLE FASTENER Filed March 6, 1926 I H n @magi L20 of the socket.

' Patented Jan. 20, 1931 'i DIDRICK DYRESEN, 0F MALnEmMAssAcnUsETrs 1 V SEPARABLE FASTENIER i Application -eldldfarch 6, 1926. Serial No.92,718. f

Thisiinvention aims to provide improvements-in separable fasteners;

In the drawings, which illustratea preferred embodiment of my invention Figure 1 is a front elevation of the fastener; Fig. 2 isa section on the line 2-2 of Fig. l, being partly in elevation;

. Fig. 3 vis a section'similar to Fig. 2, but showing the stud unlocked prior to disengagement from the-socket;

.Fig..4 is a rear elevation tached to a curtain; y Fig. 5 is a plan-view of the socket-engaging part o-'the stud prior to assembly; e Y 41 5 Fig.l 6 is an elevation view of the part shown in Fig. 5; f

Fig. 7 is an elevation view of thelatch presenting member of the stud; and l Fig. 8 includes a front, and vrear elevation of the studat- ,Referring to the drawings, -I'have shown a three-side lock fastener including a flush Vtype socket secured to a rigid lsupport and a stud secured to a flexible support. The sup- -ports maybe the body and curtain of a motor vehicle or the'like. Y. i The socket may be of any suitable construc- Y tionwhich provides a stud-receiving aperture and afspace behind the aperture.y However,

V. 0 I-have shownV a socket including a casing 1 having a flange 2 at one end and a screw 3 assembled with the opposite end. The casing Y may be secured to a rigid support 4 byI inserting a' suitable tool-in slots 5 Vprovided in the ange and turning the casing so that thescrew 3 may b e threaded into thesupport4 until the flange 2 rests against the outer face of the support 4. The body portion of vthe casing -its i-ntof, the Vrecess 6 counterboredV intothe 4.05 support 4,-as shown in Figs. 2 andB.. Q'The ihead 7 of the-screw Bseats against edge seats 8 (Fig. 3) Aprovided at theinner endjofthe casing, and is held Yagainst turning relative ,tolth'easing by prongs 9 :bent overand -against the head 7 as illustrated., In the flanged end of thecasing isprovided a studreceivingaperture 10"surroundedby a wall -11 fand normally Vclosed by a closure plate 12 .fheldagainst a `shoulder 1 3 provided at the The stud includes ya hollowpressed metal i socket-engaging part 15 having abase 16y with a wall 17 of substantial width at the outer periphery ofthe base. A yfront plate 18 is secured against the outer edge of the wall 117 to provide a casing. In .this casing isassem-v bled a one-piece latch presenting part or lever element-having a'base 19 generally conforming with the outlineV of the. wall 17 i and presenting at one end a latch portion 19a extending into the hollow -socketengagingpart 15 and then outthrough a` slot f20at the upper side of the part-15. The latch .presenting part also hasat the other end a finger 20a, which passes out of the casing ofthe stud through a slot 21 at the lower edge ofy the4V casing, as

22, arel pressedV from thebase`19 andl fpress against the front plate 18 normally vto" hold the base19 against the base y16 of the sockett1ons21a are prvidedatthe Vupper yend of the base to .provideapivot for. the latchpre- `senting member. l

While the. stud. may4 be. secured'to Ythe I'cursecure it thereto with the casing portion and nger 20` located at they front face ofthe curtainl 23. .I To this Lend, II provide thefront plate with prongs 24 which passthrough the shown in'Figs. 1f, 2 and 3.Y Spring-portions v ,v engaging part, Vas shown in'yF ig. 2. Y Boss yportain 23Y in any suitable mannerrlpreferf to wf material of the curtain and then'thiiough slots aperture, thereby .gripping-the wall'fll'suri rounding the aperture. As the socket-engaging part -lgpassesfinto the stud-receiving .agi

aperture` 10,'gthe protruding portion ofi-the latch 19a is pressed into the part 15'fbyV the wall 11 and then snaps outV again to lodge behind the shoulder 5'. Thelatch portion is of substantial widthandits y@tree vendis vcurved and provided with .a flat portion Y(l1`ig. 7) 9 for providing'a substantialbearingfsurface against ,the'fshoulde'rjeiiectivelyfto lock-the,V lstud against separation.'from the socketkwhen I 'outward strain isexerted on the curtain 'at ,110@

"the sides and above the stud. The flat bearing surface is provided by -undercutting the latch adjacent its end, as shown in Figs. 2, 3 and 7.

The'finger 20ais curved slightly toward the curtain 23 and the lower portion of the attaching plate 26 is cut away to permit the linger to be pressed tightly against the curtain as shown in Fig. 2. v

portion 28 which enters a recess 29-provided in the closure plate 12 when the stud is en- Y gaged with the socket. as shown-in F ig.. .2.

Separation of the fastener ispreferaibly effe'cted by grasping the lower edge ofthe curtain 23 and exerting an outward pull thereon, as shown injFigp. the curtain to move the depending finger 20a toward the front platej18 thereby tipping the latch presenting part about thepivot provided between the V,upper end of this part and the casingas shown in Figg, As the finger moves 'toward the front plate, the

latch 19a is withdrawn from engagement withk the shoulder-13 into the'hollow socketengaging'part 15, thereby releasing the lock between the stud and socket.V So far 'there has bee'njno relative tippingrbetween the stud as awhole and the socket. lmmediately Aafter the latch is released from the shoulder 1B, the spring 14, which has been Vpreviously :compressed byv entrance 1 of vthe 'stud cinto I the socl'ret, presses the follower 12 Yand the stud outwardly. .This action, combined w'ithga continued pull on the curtain, tipsthe 'stud Vout ofengagemen't with the socket. Tipping action iszreadily effected, because'the Alower portion 30 vof the socket-engaging lpart 15 Vslopes' gradually downwardlyvfro'm the 'reduced portion 28 Ytoa point where the socketengaging part 'en-gages the wal-lV 11 when en- Y gaged with'the socket.`

F roin the foregoing Adescription it will be understood that lhave; provided ansimple,

'ist

inexpensive `three-side lockfastener,so called because it'is locked Vagainst separation by strain except an outward strainiexertedj'at 'a predetermined side thereof..-` n

VWhileV I have sh'own'and described a preferred embodiment of my finvention, it will be understood that -chan'ges involving omission, substitution, alteration and ,reversal of parts, and even "changes '1n' the' modeof op- This. action `causes element and a stud element, oneof said elements securedto vaflexible support, a lever pivoted to the fastener-element secured to -f the flexible support, said lever presenting one The socket-engaging part 15 is provided at-its outer end with a reduced cylindrical end thereof through a slot at one side of said fastener element'for locking the fastener elementsV together and said lever having its other end extending substantially parallel to ,the llexible sup-port whereby said lever may be operated by initial movement ofthe flexible support 'rela-tive to theifastener element secured thereto therebyV to withdraw the locking endV of said lever from locking position and separate the studend socket.Y

`2.'1 A separable vfastener comprising, in combination, a socket presenting a stud-receiving aperture, a cooperating stud presenting a substantially cylindrical contractible and exp-ansible portion for passage j through said aperture and for yieldable engagement with i.

'a wal-l surrounding said aperture, a locking portionprojecting through -a slot Iat one side -o-f sai-d contracti'ble and expansible portion for locking the stud to the socket, attaching means for securi'ng'the stud-Y to a liexiblesupport, and means associated with the locking portion and extending substantially parallel to the flexible support whereby it may be operatedY lbyV initial movement of the flexible support relative to said stud thereby to shift said .locking portion out koflocking engagement with thesocket and separate the 'stud I from the socket. Y Y

3. A sep arable fastener comprising, in combination', la socket having 'a stud-receiving japerture surrounded by a wall, la shoulder back of-'sai'd wall Vand means for securing the socket to a support, a cooperating stud having a. shank'porti-on for'entrance into the aperture insaid'socke't, a lever -pivoted to the stud and 1'10 having aA latch .portion projecting throughl :a` slot `at one side ofsaid shank portion'for en-` gagement behindv said shoulder to lock the studandsocket together, attaching means for securing the stud to a flexible' support and 'means formed integral with said latch `and extending substantially parallel to the-'flexible'support whereby `it may 'be operatedby initial movement ofsaidfllexible support relative to thestud attaching means thereby torelease""'sai`cl latch portion .from behind said shoulder, and a continued pull on the 'ilexifble support separating the stud from .the socket.

4. VA three-'side lock fastener' comprising, :in combination,a socket presenting-"a stud-receiving aperture, astud secured to arflexible support and'presenting a portion for :passage into the 'aperture of said socket, a 'lever 'piv- 'oted `upon' Vsaid stu'd'and presentingi'a latch v Vportion:through a slot at-oneside ofthe 4porcomprising, in combination, a stud memberV and a socket member secured to separate supports, a socket-engaging portion presented by the stud member for passage into said socket member, locking means extending through a slot at one side of said socket-engaging portion for engagement with a shoulder presented by said socket member thereby to lock theV stud member against separationrby outmember.

ward stress exerted at threeV sides ofthe fastener and means associated with the locking means for permitting separation of the fastener by a pull at the fourth side and a spring-pressed member in the socket member having-a portion pressed therefrom and making engagement with the free end of the socket-engaging portion to assist in preventing separation ofthe fastener by stress yexerted transverse to the axis of the socket 6. A three-side lock flush type fastener comprising, inv combination, a stud member and a socket-member secured toseparate supports, ashank portion presented bythe stud member for passage into said socket member,

a single resiliently pressed latchextending` outwardly lthrough'a slot at one side-of said shank portion to lock the stud member against separation by outward stress exerted at three sides and means associated with the resiliently pressed latch for permitting separation by a pull at the fourth side and a spring-pressed member in the socket member having a por- 'j tion pressed therefrom, saidV portion making parallel engagement vwiththe stud member to assist in preventing separation of the fastener by'stress exerted transverse to the axis ofthe socket member, said spring-pressed member being moved inwardly when the stud and socket areengaged thereby assisting separation ofthe stud member and socket member bypressing outwardly upon the shank portionwhen a separating pull is exerted at the Vfourth side.

7. A three-side lock lflush type fastener comprising,in combination, a stud member and a'socket member secured to separate supports, means presented by Vthe stud for locking the stud against separation by out-V ward strain exerted at three sides while per-- mitting separation by a pull at the fourth side, a reduced end portion presented by the Y stud within said socket when engaged therewith I a springspressed folloer'finxsaid duced'sendiportionts to assist-n preventingA separation of f1 the fastenerwhenthe Y -partsarieesubj ecti'to'flateral strain.; ugr

L18. A separablefastener stud ,compri as -V a unit,v @before assembly tof-af. support, ya

socket-engaging part having `'a,base,a front' plate securedinspaced relation to4 said base to providejabasing, a `partv locatedy inrsald casing between said ibaser and said front plate, sai'dlpart being :pivoted adjacent to the :outer periphery of the casing, said part movable linger extending laterally-from said 'casing betweenithe baseandpthe V:front plate and Vco-actinov to vpermit operationofisaid pivoted/part;

9. A'separable fastener stud includin'grja l i socket-.engagingpart having a base, a front plate secured in spaced relation to saidbase to provide a casing, a part between said base and said front plate pivoted to said casing and presenting integral spring-portions normally pressing Vsaid part against yhav-inga, locking portion yfor fasteningtheA studio a socket 'and said Apart also having-,a 80j base, locking latch Vextending throughv a slot in one side of the socket-engaging parti v and a finger associated with said lockinglatch extending from between the` front plate and base to be operated against the pressure' of said spring portions to draw said latchy por?` f c tion within said socket-engaging part.

10. A separable fastenerlstud including a. Y

hollow contractible Vand expansible socketengaging part having a base, a front plate secured in'spaced relation to said base to provide a casing, a part between said base and said front platepivoted in said casing and presenting integral spring portions normally pressing said part against vsaid base, a locking'latch extending through a slot'in one side vof the socket-engaging part` and-a finger associated with said lockingl latch extending from between the front pressure of saidspring portionsV to draw said part; f v

"ll, A separablefastenerstud including a socket-engaging parthaving `a base, a front v v vplate and base to" be operated against the ,12113011 Vportion within said socket-engagingV "y, l

plate securedin lspaced relation to said base toprovidev a casing, lappart between said base and said front plate pivoted adjacent to f i Y Y the outer periphery Yof the casing, a movable finger extending laterally from said ycasing between the base andthe front plate, p and a second latchV portion associated with Ysaid movable linger and extending'through a slot at one side of said socket-engaging part and presenting,l a relatively wide vflat f socket-engaging surface' at its free end, said' latch portionfbeing operable lby movement of said finger, said latch'portion and l'said Y finger being integral'with said-pivotedpart.

t2.- A'separable fastener including a socket element andra stud element, one of said elements secured to a flexible support, re, siliently supported means pivoted- 'in the fastener element secured to the flexible sup,- port and presenting a latch portion for .enga-geinent With the cooperating fastener ele- Vnient and said iresiliently supported means also presenting a depending finger adjacent m toand cooperating With'tlie flexible support for operation by initial vmovement of the flexible support relative to the fastener element secured thereto, thereby to Withdraw said latch from `engagement with said other 15 vfastener elementto permit separation of the fastener elements.

In testimony whereof, I have signed my name to this specification. Y DIDRICK DYRESEN. 

